{"title":"松针的催化热解:沸石结构和 SiO2/Al2O3 比率对生物油产量和产品分布的影响","authors":"Omvesh Yadav, Meenu Jindal, Richa Bhatt, Akul Agarwal, Bhaskar Thallada, Venkata Chandra Sekhar Palla","doi":"10.1002/cjce.25453","DOIUrl":null,"url":null,"abstract":"<p>Renewable and sustainable energy production has gained significant attention to meet sustainable development goals (SDGs). Pine needles, an abundant typical forestry residue, can be used as a renewable biomass source for sustainable energy production. Pyrolysis is a well-established and commercialized technique for the thermochemical valorization of lignocellulosic biomass. The present work focuses on improving the bio-oil yield by introducing SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub>-based catalysts, including different zeolites and SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> materials with varying SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> ratios, during the pyrolysis. Bio-oil yield increased from 45.2 wt.% to 47.2 wt.% with the introduction of SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> catalysts and increased to 51.2 wt.% and 50.6 wt.% with HZSM-5 and Y-zeolite, respectively, and decreased to 40.0 wt.% with β-zeolite catalyst. The pyrolysis experiments of physically mixed biomass and catalyst were carried out in a fixed-bed down-flow reactor. Various process parameters such as temperature, retention time, and catalyst-to-biomass ratio were examined to evaluate their effect on product yield. The catalyst's introduction slightly decreased phenolic compound content, enhancing carbonyl and hydrocarbon production. Maximum improvement in bio-oil yield by 6 wt.% was achieved using an H-ZSM-5 catalyst at 450°C temperature and 30 min residence time with a catalyst-to-biomass ratio of 1:4.</p>","PeriodicalId":9400,"journal":{"name":"Canadian Journal of Chemical Engineering","volume":"102 11","pages":"3734-3743"},"PeriodicalIF":1.6000,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Catalytic pyrolysis of pine needles: Role of zeolite structure and SiO2/Al2O3 ratio on bio-oil yield and product distribution\",\"authors\":\"Omvesh Yadav, Meenu Jindal, Richa Bhatt, Akul Agarwal, Bhaskar Thallada, Venkata Chandra Sekhar Palla\",\"doi\":\"10.1002/cjce.25453\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Renewable and sustainable energy production has gained significant attention to meet sustainable development goals (SDGs). Pine needles, an abundant typical forestry residue, can be used as a renewable biomass source for sustainable energy production. Pyrolysis is a well-established and commercialized technique for the thermochemical valorization of lignocellulosic biomass. The present work focuses on improving the bio-oil yield by introducing SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub>-based catalysts, including different zeolites and SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> materials with varying SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> ratios, during the pyrolysis. Bio-oil yield increased from 45.2 wt.% to 47.2 wt.% with the introduction of SiO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub> catalysts and increased to 51.2 wt.% and 50.6 wt.% with HZSM-5 and Y-zeolite, respectively, and decreased to 40.0 wt.% with β-zeolite catalyst. The pyrolysis experiments of physically mixed biomass and catalyst were carried out in a fixed-bed down-flow reactor. Various process parameters such as temperature, retention time, and catalyst-to-biomass ratio were examined to evaluate their effect on product yield. The catalyst's introduction slightly decreased phenolic compound content, enhancing carbonyl and hydrocarbon production. Maximum improvement in bio-oil yield by 6 wt.% was achieved using an H-ZSM-5 catalyst at 450°C temperature and 30 min residence time with a catalyst-to-biomass ratio of 1:4.</p>\",\"PeriodicalId\":9400,\"journal\":{\"name\":\"Canadian Journal of Chemical Engineering\",\"volume\":\"102 11\",\"pages\":\"3734-3743\"},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2024-08-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Canadian Journal of Chemical Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/cjce.25453\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Canadian Journal of Chemical Engineering","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/cjce.25453","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Catalytic pyrolysis of pine needles: Role of zeolite structure and SiO2/Al2O3 ratio on bio-oil yield and product distribution
Renewable and sustainable energy production has gained significant attention to meet sustainable development goals (SDGs). Pine needles, an abundant typical forestry residue, can be used as a renewable biomass source for sustainable energy production. Pyrolysis is a well-established and commercialized technique for the thermochemical valorization of lignocellulosic biomass. The present work focuses on improving the bio-oil yield by introducing SiO2-Al2O3-based catalysts, including different zeolites and SiO2-Al2O3 materials with varying SiO2-Al2O3 ratios, during the pyrolysis. Bio-oil yield increased from 45.2 wt.% to 47.2 wt.% with the introduction of SiO2-Al2O3 catalysts and increased to 51.2 wt.% and 50.6 wt.% with HZSM-5 and Y-zeolite, respectively, and decreased to 40.0 wt.% with β-zeolite catalyst. The pyrolysis experiments of physically mixed biomass and catalyst were carried out in a fixed-bed down-flow reactor. Various process parameters such as temperature, retention time, and catalyst-to-biomass ratio were examined to evaluate their effect on product yield. The catalyst's introduction slightly decreased phenolic compound content, enhancing carbonyl and hydrocarbon production. Maximum improvement in bio-oil yield by 6 wt.% was achieved using an H-ZSM-5 catalyst at 450°C temperature and 30 min residence time with a catalyst-to-biomass ratio of 1:4.
期刊介绍:
The Canadian Journal of Chemical Engineering (CJChE) publishes original research articles, new theoretical interpretation or experimental findings and critical reviews in the science or industrial practice of chemical and biochemical processes. Preference is given to papers having a clearly indicated scope and applicability in any of the following areas: Fluid mechanics, heat and mass transfer, multiphase flows, separations processes, thermodynamics, process systems engineering, reactors and reaction kinetics, catalysis, interfacial phenomena, electrochemical phenomena, bioengineering, minerals processing and natural products and environmental and energy engineering. Papers that merely describe or present a conventional or routine analysis of existing processes will not be considered.